Merge local-dev branch into main (#56)

Moved the local genesis.json and justfile to `/dev` directory, this
requires just commands to be run with:
```shell
just -f dev/justfile <recipe>
```

This should be merged alongside updates to the docs in this PR:
astriaorg/docs#95

---------

Co-authored-by: Sam Bukowski <[email protected]>
Co-authored-by: Jesse Snyder <[email protected]>

dev/geth-genesis-local.json

@@ -0,0 +1,38 @@
+{
+    "config": {
+        "chainId": 1337,
+        "homesteadBlock": 0,
+        "eip150Block": 0,
+        "eip155Block": 0,
+        "eip158Block": 0,
+        "byzantiumBlock": 0,
+        "constantinopleBlock": 0,
+        "petersburgBlock": 0,
+        "istanbulBlock": 0,
+        "berlinBlock": 0,
+        "londonBlock": 0,
+        "shanghaiTime": 0,
+        "terminalTotalDifficulty": 0,
+        "terminalTotalDifficultyPassed": true,
+        "ethash": {},
+        "astriaRollupName": "astria-test-chain-1",
+        "astriaOverrideGenesisExtraData": true,
+        "astriaSequencerInitialHeight": 2,
+        "astriaSequencerAddressPrefix": "astria",
+        "astriaCelestiaInitialHeight": 2,
+        "astriaCelestiaHeightVariance": 10,
+        "astriaBridgeAddresses": [],
+        "astriaBridgeSenderAddress": "0x0000000000000000000000000000000000000000",
+        "astriaFeeCollectors": {
+            "1": "0xaC21B97d35Bf75A7dAb16f35b111a50e78A72F30"
+        },
+        "astriaEIP1559Params": {
+            "1": { "minBaseFee": 0, "elasticityMultiplier": 2, "BaseFeeChangeDenominator": 8 }
+        }
+    },
+    "difficulty": "10000000",
+    "gasLimit": "8000000",
+    "alloc": {
+        "0xA2A7d9CA42EF412EEFbb3D0157d5f199Af7f2780": { "balance": "300000000000000000000" }
+    }
+}

dev/justfile

@@ -0,0 +1,40 @@
+default:
+  @just --list
+
+set dotenv-load
+set fallback
+
+# build a local geth binary
+build:
+    cd .. && make geth
+
+# initialize a local geth node
+init:
+    ../build/bin/geth --db.engine pebble \
+    --state.scheme=path \
+    init geth-genesis-local.json
+
+# start a local geth node
+run:
+    ../build/bin/geth \
+    --http \
+    --http.addr=0.0.0.0 \
+    --http.port=8545 \
+    --http.corsdomain="*" \
+    --http.vhosts="*" \
+    --http.api=eth,net,web3,debug,txpool \
+    --ws \
+    --ws.addr=0.0.0.0 \
+    --ws.port=8546 \
+    --ws.origins="*" \
+    --grpc \
+    --grpc.addr=0.0.0.0 \
+    --grpc.port=50051 \
+    --db.engine=pebble \
+    --state.scheme=path
+
+# this is specifically for mac os
+clean:
+    rm -rf ~/Library/Ethereum/
+
+clean-restart: clean init run